Extract minimal RenderViewHost interface for embedders, leaving

chrome/browser/renderer_host/transfer_navigation_resource_throttle.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/renderer_host/transfer_navigation_resource_throttle.h"
 
 #include "base/bind.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/browser/extensions/extension_info_map.h"
 #include "chrome/common/extensions/extension_process_policy.h"
@@ skipping 13 matching lines @@
                                   const GURL& new_url,
                                   const content::Referrer& referrer,
                                   WindowOpenDisposition window_open_disposition,
                                   int64 frame_id,
                                   const GlobalRequestID& request_id) {
   RenderViewHost* rvh = RenderViewHost::FromID(render_process_id,
                                                render_view_id);
   if (!rvh)
     return;
 
-  RenderViewHostDelegate* delegate = rvh->delegate();
+  RenderViewHostDelegate* delegate = rvh->GetDelegate();
   if (!delegate)
     return;
 
   delegate->RequestTransferURL(
       new_url, referrer,
       window_open_disposition, frame_id, request_id);
 }
 
 }  // namespace
 
@@ skipping 38 matching lines @@
               render_process_id, render_view_id,
               new_url,
               content::Referrer(GURL(request_->referrer()),
                                 info->referrer_policy()),
               CURRENT_TAB, info->frame_id(), global_id));
 
       *defer = true;
     }
   }
 }